package com.servlet;

import com.dao.StudentDao;
import com.vo.StudentVo;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.*;
import java.util.ArrayList;
import java.util.List;


public class LoginCI extends HttpServlet {

    /**
     * Constructor of the object.
     */
    public LoginCI() {
        super();
    }

    /**
     * Destruction of the servlet. <br>
     */
    public void destroy() {
        super.destroy(); // Just puts "destroy" string in log
        // Put your code here
    }

    /**
     * The doGet method of the servlet. <br>
     *
     * This method is called when a form has its tag value method equals to get.
     *
     * @param request the request send by the client to the server
     * @param response the response send by the server to the client
     * @throws ServletException if an error occurred
     * @throws IOException if an error occurred
     */
    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        //Add some codes
        doPost(request,response);
    }

    /**
     * The doPost method of the servlet. <br>
     *
     * This method is called when a form has its tag value method equals to post.
     *
     * @param request the request send by the client to the server
     * @param response the response send by the server to the client
     * @throws ServletException if an error occurred
     * @throws IOException if an error occurred
     */
    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        String user = request.getParameter("username");
        String password = request.getParameter("password");
        request.getSession().setAttribute("user", request.getParameter("username"));      //将user放在Attribute中


        System.out.println(request.getParameter("username")+request.getParameter("password"));
        StudentDao studentDao = new StudentDao();
        List<StudentVo> lists = studentDao.selectStudent("studentname = "+"'"+user+"'");
        for(StudentVo s:lists){
            if(s.getPassword() == password){
                request.getRequestDispatcher("index.jsp").forward(request, response); //校验用户名密码正确，跳转到welcome.jsp
            }else{

            }
        }




       // request.getRequestDispatcher("index.jsp").forward(request, response); //校验用户名密码正确，跳转到welcome.jsp

    }






    /**
     * Initialization of the servlet. <br>
     *
     * @throws ServletException if an error occurs
     */
    public void init() throws ServletException {
        // Put your code here
    }

}
